Observation of quasi-coherent edge fluctuations in Ohmic plasmas on NSTX
Abstract
A quasi-coherent mode with frequency f = 40 kHz is observed in Ohmic plasmas in NSTX with the gas puff imaging diagnostic (GPI). This mode is located predominantly just inside the separatrix, with a maximum fluctuation amplitude similar to that of the broadband turbulence in the same frequency range. The quasi-coherent mode has a poloidal wavelength 16 cm and a poloidal velocity 49 km/s in the electron diamagnetic direction, which are similar to the characteristics expected from a linear drift-wave like mode in the edge.
- Authors:
-
- Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
- Publication Date:
- DOE Contract Number:
- AC02-09CH11466
- Research Org.:
- Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Fusion Energy Sciences (FES)
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY
- Keywords:
- Turbulence
- OSTI Identifier:
- 1366985
- DOI:
- https://doi.org/10.11578/1366985
Citation Formats
Banerjee, S., Diallo, A., and Zweben, S.J. Observation of quasi-coherent edge fluctuations in Ohmic plasmas on NSTX. United States: N. p., 2016.
Web. doi:10.11578/1366985.
Banerjee, S., Diallo, A., & Zweben, S.J. Observation of quasi-coherent edge fluctuations in Ohmic plasmas on NSTX. United States. doi:https://doi.org/10.11578/1366985
Banerjee, S., Diallo, A., and Zweben, S.J. 2016.
"Observation of quasi-coherent edge fluctuations in Ohmic plasmas on NSTX". United States. doi:https://doi.org/10.11578/1366985. https://www.osti.gov/servlets/purl/1366985. Pub date:Fri Apr 01 00:00:00 EDT 2016
@article{osti_1366985,
title = {Observation of quasi-coherent edge fluctuations in Ohmic plasmas on NSTX},
author = {Banerjee, S. and Diallo, A. and Zweben, S.J.},
abstractNote = {A quasi-coherent mode with frequency f = 40 kHz is observed in Ohmic plasmas in NSTX with the gas puff imaging diagnostic (GPI). This mode is located predominantly just inside the separatrix, with a maximum fluctuation amplitude similar to that of the broadband turbulence in the same frequency range. The quasi-coherent mode has a poloidal wavelength 16 cm and a poloidal velocity 49 km/s in the electron diamagnetic direction, which are similar to the characteristics expected from a linear drift-wave like mode in the edge.},
doi = {10.11578/1366985},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2016},
month = {4}
}
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Works referenced in this record:
Observation of quasi-coherent edge fluctuations in Ohmic plasmas on National Spherical Torus Experiment
journal, April 2016
- Banerjee, Santanu; Diallo, A.; Zweben, S. J.
- Physics of Plasmas, Vol. 23, Issue 4
Works referencing / citing this record:
Observation of quasi-coherent edge fluctuations in Ohmic plasmas on National Spherical Torus Experiment
journal, April 2016
- Banerjee, Santanu; Diallo, A.; Zweben, S. J.
- Physics of Plasmas, Vol. 23, Issue 4